Coating compound



Patented Jan. 16, 1934 i UNITED STATES PATENT OFFICE No Drawing. Application October 20, 1928 Serial No. 313,947

9 Claims.

My invention relates to an improved coating compound. that can be used for decorative painting of a variety of articles. The paint derives its coloring properties from differently colored dyes that may be used. The product when ready for use is of the consistency of cream and can be kept in proper preserving receptacles or containers.

The compound can be applied with an ordinary brush, such as is used for craft purposes, directly from the containing receptacle.

A wide range of articles can be decorated with my improved paint such as those made of pyralin, celluloid, leather, imitation leather, sanitas, linoleum, wood, glass, animal and vegetable fibres, etc.

Pyralin articles such as hand mirrors, combs and tiles, both clear and opaque can be decorated with a variety of colors in different contrasting relationship. Lamp shades, toilet articles and fancy articles such as candy boxes, vanity boxes, etc., are also some of the particular objects to which I apply this decorative coating. I have tested and found the colors less fugitive to light than any of the present basic and direct sulphur or aniline colors that I have used.

This paint can also be used on surfaces of shellac, varnish, lacquers, enamels and the like without injuring the surface. It can also be used to paint on paper in color over color.

One of the ways in which I prepare a formula is as follows:

I first mix together some of the ingredients in the following proportions which will be referred to as part A.

Dye, 1 -3 drams, depending on the intensity of color desired; tincture of hyssop 2 ounces; acetic acid, 36%, dram; sodium chloride,

dram. These are then boiled in an aluminum pot for about 3 to 5 minutes.

I then mix together other ingredients, which will be referred to as part B, and as follows:

Acetic acid, 36%, 1% ounce, ox gall U. S. P. dram, sodium chloride dram, gelatin 1%, sheets and acetone, 10 drops, 1% sheets of gelatin weighing approximately six grams. These are cooked for a while in a double boiler and added to part A.

When this mixture is cold, I then add /4 dram pancreatin U. S. P. The solution should stand for some time after adding the pancreatin so that digestion may take place. This should be from one to several hours.

Any suitable dye of the basic or acid type can be used. dant.

Salt acts as an assistant in the dye, provides the desired permanency and hardness to the finish and insures smooth deposition of the paint so film.

Acetic acid also acts as an assistant and possibly also as a solvent to carry the dye into the materials being coated. Acetone acts as a solvent, of some materials including pyralin and increases the intensity of the dye. Its use is optional.

Gelatin is a soluble, proteid colloidal body and is added as a thickening agent. It is insoluble in cold water but soluble in hot water. After digestion with pancreatin and ox gall, the product becomes soluble in cold water and-is easily washed off.

Ox gall U. S. P. is inspissated bile obtained from the ox. It is a digestant and in art is used to clarify color and for the purpose of making it resistant to light.

Pancreatin is obtained from the pancreas of animals. It contains digestive ferments. When used with dyes, it has the property of greatly in- 0 tensifying the color.

In preparing the article to be painted, the surface should be thoroughly cleaned. The desired design may then be applied by a suitable transfer process and painted with an ordinary brush. 35 After the colors are thus applied the nature of the compound is such as to insure substantially instantaneous drying and hardening. It is advisable to wash the surface With cold water to remove the gelatinous thickening agent and other extraneous matter. Cold water also seems to aid in embedding the dye.

I claim:

1. A decorative paint comprising a basic dye solution to which has been added tincture of hyssop and a thickening agent comprising the reaction product of gelatin, ox gall, and pancreatin.

2. A decorative paint comprising the reaction product of a mixture of a basic dye 1 to 3 drains, tincture of hyssop 2 oz., acetic acid 36%,

dram, sodium chloride dram, to which is added the reaction product of a mixture of acetic acid 36%, 1 oz, ox gall dram, sodium chloride dram, gelatin 1% sheets; together with A dram of pancreatin.

3. A decorative paint, comprising the reaction product of a basic dye, tincture of hyssop, a thickening agent comprising gelatin, and pancreatin.

Hyssop serves the purpose of a mor- 4. A decorative paint, comprising the reaction product of an acid dye, tincture of hyssop, a thickening agent comprising gelatin, and a pancreatin digestant.

5. A decorative paint, comprising the reaction product of a basic dye solution, tincture of hyssop, a thickening agent comprising gelatin, a pancreatin digestant, and an ox gall fixing agent.

6. A decorative paint comprising the reaction product of a mixture of acid dye 1 1 to 3 drams, tincture of hyssop 2 02., acetic acid (36%) A2 dram, sodium chloride A; dram, to which is added the reaction product of a mixture of acetic acid (36%) 1 02., ox gall A dram, sodium chloride dram, gelatin 1% sheets; together with A dram of pancreatin.

MARY B. PARRISH. 

